Gallery View:Forbes' top 10 billionaires in 2013

8. Li Ka-shing ($31 billion). Asia's richest man Li Ka-shing waves during a press conference in Hong Kong on August 2, 2012. A Vietnamese property developer who started out making noodles in Ukraine joined Li for the first time on Forbes magazine's world's billionaires list Monday.

8. Li Ka-shing ($31 billion). Asia's richest man Li Ka-shing waves during a press conference in Hong Kong on August 2, 2012. A Vietnamese property developer who started out making noodles in Ukraine joined Li for the first time on Forbes magazine's world's billionaires list Monday.